Home / 21,062.64-28,979.28-15,997.44

Finding the Fourth Proportional to 21,062.64, 28,979.28 and 15,997.44

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Solution

The fourth proportional to 21,062.64, 28,979.28 and 15,997.44 is: 22,010.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,062.64 : 28,979.28 = 15,997.44 : x
  2. Step 2: Convert to fraction form
    21,062.64/28,979.28 = 15,997.44/x
  3. Step 3: Cross multiply
    21,062.64x = 28,979.28 × 15,997.44
  4. Step 4: Simplify right side
    21,062.64x = 463,594,293.04
  5. Step 5: Solve for x
    x = 463,594,293.04/21,062.64
  6. Step 6: Final answer
    x = 22,010.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.